..were to present a new approach for nerve-sparing radical hysterectomy (NSRH) with the assistance of magnifying lenses and to describe the differences in autonomic nerve plexus trauma between NSRH type III and conventional radical ..

The concept of optical phase discontinuities is applied to the design and demonstration of aberration-free planar lenses and axicons, comprising a phased array of ultrathin subwavelength-spaced optical antennas...

Compact, light-weight and cost-effective microscope based on lensless incoherent holography for telemedicine applications

..The polarization rotator rotates the polarization state of an incoming beam by an arbitrary angle. Both optical devices are reflectionless at the entry and exit interfaces. Design details and full-wave simulation results are provided...

Posterior parietal cortex and the dissociable components of prism adaptation

..The data indicates that the ability to implement control strategies may not be necessary for successful adaptation to prisms. A proposed model for the role of posterior parietal cortex in prism adaptation is also presented...

Ling LinSchool of Physics, The University of Melbourne, Vic, AustraliaNano Lett 10:1936-40. 2010

We present the experimental demonstration of what are to our knowledge the first two-dimensional planar plasmonic lenses formed by an array of spatially varying cross-shaped apertures in a metallic film for Fresnel-region focusing...

..This compact and light-weight holographic microscope installed on a cellphone does not utilize any lenses, lasers or other bulky optical components and it may offer a cost-effective tool for telemedicine applications to ..

Influence of loupes and age on the near visual acuity of practicing dentists

..01). It can be concluded that near visual acuity varies highly between individuals and decreases during the lifetime. Independent of age or natural vision, visual acuity can be significantly improved by using magnification devices...

Microscale lenses are mostly used as near-sighted lenses. The far-field imaging properties of a microscale spherical lens, where the lens is spatially separated from the object, are experimentally studied...

..Comparisons with numerical simulations indicate that this maximum originates from an enhanced coupling between probe and object, which might be applicable for multifunctional circuits, infrared spectroscopy and thermal sensors...

..Optometrists offer flexibility but sensitivity and specificity of schemes have varied considerably, perhaps because of variability in screening methodology and that there is frequently no quality assurance programme...

..Using the appropriate visual enhancement should be considered for all dental professionals to make the practice of dentistry more precise, easier, and more enjoyable and to reduce the risk of musculoskeletal injury...

..Such a transformed lens maintains the broadband performance of the original lens, thus providing a superior alternative to the diffractive Fresnel element which is inherently narrow band...

Prism adaptation changes perceptual awareness for chimeric visual objects but not for chimeric faces in spatial neglect after right-hemisphere stroke

Margarita SarriInstitute of Cognitive Neuroscience and Department of Psychology, University College London, London, UKNeurocase 12:127-35. 2006

..Prism therapy dramatically improved awareness for the identity of the left side of chimeric non-face objects, but had no effect on judging expressions for chimeric faces. The latter may thus be unique in showing no prism benefit...

..Future studies of possible rehabilitative impact from prisms upon neglect may need to consider carefully how to measure prism adaptation per se, separately from any impact of such adaptation upon manifestations of neglect...

Fish-eye lenses are convenient in such applications where a very wide angle of view is needed, but their use for measurement purposes has been limited by the lack of an accurate, generic, and easy-to-use calibration procedure...

..8 K), the field has since advanced to include room-temperature observations, largely owing to the use of objective lenses with high numerical aperture, brighter fluorophores and more sensitive detectors...

Achieving high focusing power for a large-aperture liquid crystal lens with novel hole-and-ring electrodes

..e. 1.14 degrees ) when the prism was on the NDE for both distances, but more appropriate when the prism was on the DE. The results suggest that sensory disparity process and vertical vergence responses are modulated by eye dominance...

..Disposable endoscopic microscope objectives could help in vivo confocal microscopy technology mature to permit wide-scale clinical screening and detection of early cancers and precancerous lesions...

..To determine the refractive state of tree shrew eyes using visual evoked potentials (VEP's) recorded from primary visual cortex and compare the values with those obtained with streak retinoscopy and with an autorefractor...

..Viable FCS experiments at concentrations 1-1000 nM with different objectives costing less than $40 are demonstrated. This offers a simple and low-cost alternative to the conventional complex microscope objectives...

..The artificial apposition compound eye can be considered as a simple imaging optical sensor while the cluster eye is capable of becoming a valid alternative to classical bulk objectives but is much more complex than the first system...

..has also expanded into optics to create reconfigurable and flexible optical devices such as reconfigurable lenses, lasers, waveguides, switches, and on-chip microscopes. Here we present a new opto-fluidic microscopy modality, i...

..before and after PA were then compared to that of control neglect patients, who were wearing goggles with neutral lenses. Moreover, in order to provide normative data on ocular scanning behaviour during letter string reading, ..

..Super resolution optical imaging can be obtained with uniform light intensity and tunable magnification by changing parameters of the structure. Design principles and examples are given and illustrated with numerical simulation...

..It showed high sensitivity, providing correct and repeatable distance measurements on biological samples even in case of very low reflected power (down to 2 to 3 nW), with an error lower than 0.1 mm...

..in all three dimensions, by using structured illumination in a microscope that has two opposing objective lenses. Illumination light is split by a grating and a beam splitter into six mutually coherent beams, three of which ..

..Combined with a patterned twisted nematic (TN) cell, allowing a rotation of only one polarization component, a polarizer with high efficiency (72,5% (measured) is realized. Simulations and measurements are presented...

..The parallelism of the reflected beam to an incident one also deteriorated. The changes in the polarization angle and in the ellipticity of reflected light polarization were not observed from the visible to the far infrared range...

..The corrective process becomes increasingly important when laser energy has to be transported without losses at arbitrary depths, with the purpose of triggering mechanisms of positive refractive index change...

..The average measurement errors of the first and the second methods were 0.123% and 0.061% in the geometrical thickness, 0.133% and 0.066% in the phase index, and 0.106% and 0.057% in the group index, respectively...

..Compared to other methods, this PA imaging system can acquire the PA images more rapidly without any complex algorithms, and it may provide a more convenient method for future in vivo noninvasive imaging of tissues and clinic diagnosis...

..such as proparacaine and benzalkonium chloride) and delivery (devices such as merocel sponges, hydrogel contact lenses, and collagen shields) will be studied. In aim 4, topical cross-linking of live rabbits will be undertaken...

..mouse which expresses humanized levels of ascorbic acid in the lens, 2) the demonstration that within 12 mos the lenses turn yellow and accumulate all ascorbylation products present in the human lens, 3) the discovery that both oral ..

..Since this is mounted on an Axiovert 200 which is an inverted microscopic system, with lenses and internal, descanned detectors with filter-wheel based spectral selection optimized for cell culture and ..

..Tremendous advances have been made both in the design of the IOL and in the surgical procedure. The newest lenses can correct refractive errors and some lenses are beginning to appear that have the potential to restore ..

..first generation instrument, and extend its capabilities by adding real-time motion correction, new chambers and lenses for imaging of deeper brain structures such as the hippocampus, and the incorporation of a visual virtual reality ..

..focus on identification of key lipid and protein components of lipid rafts in IDs of embryonic and adult chicken lenses. Because IDs share several unique features with lipid rafts of other cells, we hypothesize that the lens-specific ..

..The particles were found to be more numerous in nuclear cataracts than age-matched transparent donor lenses. A method of quantitative electron absorption was developed to measure the local protein concentration and ..

..in this resubmission to purchase a 5-laser 2-camera Amnis ImageStreamX with three (20x, 40x, 60x) objective lenses. This new platform is a vastly improved, refined and far more powerful version of the original instrument Amnis ..

..of aggressive lubrication with preservative-free artificial tears and ointments, the use of bandage soft contact lenses, pressure patching, punctal plugging, and the surgical closure of the eyelids...

..allow aberration- compensated imaging suitable for 90% of clinical subjects without the use of added trial lenses. In Phase II work, the AOSLO was demonstrated to achieve exceptional retinal image resolution and operational ..

..by simultaneous, competing myopic and hyperopic defocus produced by several types of multifocal and astigmatic lenses. We will evaluate hypotheses regarding retinal processing, optical aberrations, and peripheral retinal growth to ..

..established will be compared with each other and with databases established from developing, adult and cataractous lenses. This research will eventually identify gene patterns of known and novel genes that are involved in EMT and PCO as ..

Epikeratophakia was developed for the correction of aphakia in adult patients unable to tolerate contact lenses and not candidates for secondary implantation of intraocular lenses, and adapted for use in infants and children with ..

..wound healing at the surface of the eye, as is commonly done using current, non-medicated hydrogel bandage contact lenses. The nanosphere technology utilized in this project allows for customized encapsulation to control drug release...

..Our recent studies of the lens epithelial cell viability in human normal and cataractous lenses and in rat lenses with or without insult by oxidative stress, calcimycin and UVB consistently suggest that induced ..